YARA · Malpedia signator rules
MALPEDIA_Win_Oni_Auto
autogenerated rule brought to you by yara-signator
- Author
- Felix Bilstein - yara-signator at cocacoding dot com
- Date
- 2026-05-04
- Modified
- 2026-05-18
- Score / Quality
- 75 / 75
What this rule detects
autogenerated rule brought to you by yara-signator
Associated malware family: Oni.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-oni-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Oni_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "a0f25e02-7b78-57b8-8594-38d2c2b2f26a"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.oni"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.oni_auto.yar#L1-L123"
= "N/A"
= "d72b50d34d0cd90d90022123b45db6a8a537ff1e016f2c9185af8e30808dcd21"
= 75
= 75
= "FILE"
= "1"
= "yara-signator v0.6.0"
= "callsandjumps;datarefs;binvalue"
= "20260422"
= "a182e35da64e6d71cb55f125c4d4225196523f14"
= "20260504"
= "CC BY-SA 4.0"
= "TLP:WHITE"
strings:
$sequence_0 = { 7253 83f923 7753 8bc8 51 e8???????? }
$sequence_1 = { 50 ff15???????? 85c0 740f e8???????? 6a01 ff15???????? }
$sequence_2 = { 83c404 8b85dcfdffff c785c4fdffff0f000000 c785c0fdffff00000000 c685b0fdffff00 }
$sequence_3 = { c3 c744243c0f000000 c744243800000000 c644242800 }
$sequence_4 = { 8955ec 3b5310 0f8261ffffff 8d4df0 e8???????? }
$sequence_5 = { 8d4ff8 395310 0f869f000000 837b1410 7204 8b03 eb02 }
$sequence_6 = { 6aff 40 c745dc0f000000 50 8d45e0 c745d800000000 50 }
$sequence_7 = { c645b400 83f810 723e 8b4dcc 40 3d00100000 722a }
$sequence_8 = { 7241 8b8d98fdffff 40 3d00100000 722a f6c11f }
$sequence_9 = { 2bc8 83f904 0f8231010000 83f923 0f872d010000 }
condition:
7 of them and filesize < 499712
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 7253 83f923 7753 8bc8 51 e8???????? } | |
| $sequence_1 | hex | { 50 ff15???????? 85c0 740f e8???????? 6a01 ff15???????? } | |
| $sequence_2 | hex | { 83c404 8b85dcfdffff c785c4fdffff0f000000 c785c0fdffff00000000 c685b0fdffff00 } | |
| $sequence_3 | hex | { c3 c744243c0f000000 c744243800000000 c644242800 } | |
| $sequence_4 | hex | { 8955ec 3b5310 0f8261ffffff 8d4df0 e8???????? } | |
| $sequence_5 | hex | { 8d4ff8 395310 0f869f000000 837b1410 7204 8b03 eb02 } | |
| $sequence_6 | hex | { 6aff 40 c745dc0f000000 50 8d45e0 c745d800000000 50 } | |
| $sequence_7 | hex | { c645b400 83f810 723e 8b4dcc 40 3d00100000 722a } | |
| $sequence_8 | hex | { 7241 8b8d98fdffff 40 3d00100000 722a f6c11f } | |
| $sequence_9 | hex | { 2bc8 83f904 0f8231010000 83f923 0f872d010000 } |
Condition
7 of them and filesize < 499712In plain words (Heuristic)
- The file must be smaller than 499712 (a cheap guard that skips large files).
- At least 7 patterns in the rule must match.
Test this rule in your browser
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Licence & attribution
Author: Felix Bilstein - yara-signator at cocacoding dot com
Source repository: Malpedia signator rules @ c901f97b7d
Licence: Creative Commons Attribution-ShareAlike 4.0 (repository licence)
Mirrored via YARA Forge 20260927, which prefixes rule names with the source and adds normalised meta fields.
Rule id: a0f25e02-7b78-57b8-8594-38d2c2b2f26a
Metadata
| version | 1 |
|---|---|
| tool | yara-signator v0.6.0 |
| signator_config | callsandjumps;datarefs;binvalue |
| malpedia_rule_date | 20260422 |
| malpedia_hash | a182e35da64e6d71cb55f125c4d4225196523f14 |
| malpedia_version | 20260504 |
| malpedia_license | CC BY-SA 4.0 |
| malpedia_sharing | TLP:WHITE |
Tags:FILE
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